209 lines
5.3 KiB
LLVM
209 lines
5.3 KiB
LLVM
; Test 64-bit signed division and remainder when the divisor is
|
|
; a signed-extended i32.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -asm-verbose=0 | FileCheck %s
|
|
|
|
declare i64 @foo()
|
|
|
|
; Test register division. The result is in the second of the two registers.
|
|
define void @f1(i64 %dummy, i64 %a, i32 %b, i64 *%dest) {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK-NOT: {{%r[234]}}
|
|
; CHECK: dsgfr %r2, %r4
|
|
; CHECK: stg %r3, 0(%r5)
|
|
; CHECK: br %r14
|
|
%bext = sext i32 %b to i64
|
|
%div = sdiv i64 %a, %bext
|
|
store i64 %div, i64 *%dest
|
|
ret void
|
|
}
|
|
|
|
; Test register remainder. The result is in the first of the two registers.
|
|
define void @f2(i64 %dummy, i64 %a, i32 %b, i64 *%dest) {
|
|
; CHECK-LABEL: f2:
|
|
; CHECK-NOT: {{%r[234]}}
|
|
; CHECK: dsgfr %r2, %r4
|
|
; CHECK: stg %r2, 0(%r5)
|
|
; CHECK: br %r14
|
|
%bext = sext i32 %b to i64
|
|
%rem = srem i64 %a, %bext
|
|
store i64 %rem, i64 *%dest
|
|
ret void
|
|
}
|
|
|
|
; Test that division and remainder use a single instruction.
|
|
define i64 @f3(i64 %dummy, i64 %a, i32 %b) {
|
|
; CHECK-LABEL: f3:
|
|
; CHECK-NOT: {{%r[234]}}
|
|
; CHECK: dsgfr %r2, %r4
|
|
; CHECK: ogr %r2, %r3
|
|
; CHECK: br %r14
|
|
%bext = sext i32 %b to i64
|
|
%div = sdiv i64 %a, %bext
|
|
%rem = srem i64 %a, %bext
|
|
%or = or i64 %rem, %div
|
|
ret i64 %or
|
|
}
|
|
|
|
; Test register division when the dividend is zero rather than sign extended.
|
|
; We can't use dsgfr here
|
|
define void @f4(i64 %dummy, i64 %a, i32 %b, i64 *%dest) {
|
|
; CHECK-LABEL: f4:
|
|
; CHECK-NOT: dsgfr
|
|
; CHECK: br %r14
|
|
%bext = zext i32 %b to i64
|
|
%div = sdiv i64 %a, %bext
|
|
store i64 %div, i64 *%dest
|
|
ret void
|
|
}
|
|
|
|
; ...likewise remainder.
|
|
define void @f5(i64 %dummy, i64 %a, i32 %b, i64 *%dest) {
|
|
; CHECK-LABEL: f5:
|
|
; CHECK-NOT: dsgfr
|
|
; CHECK: br %r14
|
|
%bext = zext i32 %b to i64
|
|
%rem = srem i64 %a, %bext
|
|
store i64 %rem, i64 *%dest
|
|
ret void
|
|
}
|
|
|
|
; Test memory division with no displacement.
|
|
define void @f6(i64 %dummy, i64 %a, i32 *%src, i64 *%dest) {
|
|
; CHECK-LABEL: f6:
|
|
; CHECK-NOT: {{%r[234]}}
|
|
; CHECK: dsgf %r2, 0(%r4)
|
|
; CHECK: stg %r3, 0(%r5)
|
|
; CHECK: br %r14
|
|
%b = load i32, i32 *%src
|
|
%bext = sext i32 %b to i64
|
|
%div = sdiv i64 %a, %bext
|
|
store i64 %div, i64 *%dest
|
|
ret void
|
|
}
|
|
|
|
; Test memory remainder with no displacement.
|
|
define void @f7(i64 %dummy, i64 %a, i32 *%src, i64 *%dest) {
|
|
; CHECK-LABEL: f7:
|
|
; CHECK-NOT: {{%r[234]}}
|
|
; CHECK: dsgf %r2, 0(%r4)
|
|
; CHECK: stg %r2, 0(%r5)
|
|
; CHECK: br %r14
|
|
%b = load i32, i32 *%src
|
|
%bext = sext i32 %b to i64
|
|
%rem = srem i64 %a, %bext
|
|
store i64 %rem, i64 *%dest
|
|
ret void
|
|
}
|
|
|
|
; Test both memory division and memory remainder.
|
|
define i64 @f8(i64 %dummy, i64 %a, i32 *%src) {
|
|
; CHECK-LABEL: f8:
|
|
; CHECK-NOT: {{%r[234]}}
|
|
; CHECK: dsgf %r2, 0(%r4)
|
|
; CHECK-NOT: {{dsgf|dsgfr}}
|
|
; CHECK: ogr %r2, %r3
|
|
; CHECK: br %r14
|
|
%b = load i32, i32 *%src
|
|
%bext = sext i32 %b to i64
|
|
%div = sdiv i64 %a, %bext
|
|
%rem = srem i64 %a, %bext
|
|
%or = or i64 %rem, %div
|
|
ret i64 %or
|
|
}
|
|
|
|
; Check the high end of the DSGF range.
|
|
define i64 @f9(i64 %dummy, i64 %a, i32 *%src) {
|
|
; CHECK-LABEL: f9:
|
|
; CHECK: dsgf %r2, 524284(%r4)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32, i32 *%src, i64 131071
|
|
%b = load i32, i32 *%ptr
|
|
%bext = sext i32 %b to i64
|
|
%rem = srem i64 %a, %bext
|
|
ret i64 %rem
|
|
}
|
|
|
|
; Check the next word up, which needs separate address logic.
|
|
; Other sequences besides this one would be OK.
|
|
define i64 @f10(i64 %dummy, i64 %a, i32 *%src) {
|
|
; CHECK-LABEL: f10:
|
|
; CHECK: agfi %r4, 524288
|
|
; CHECK: dsgf %r2, 0(%r4)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32, i32 *%src, i64 131072
|
|
%b = load i32, i32 *%ptr
|
|
%bext = sext i32 %b to i64
|
|
%rem = srem i64 %a, %bext
|
|
ret i64 %rem
|
|
}
|
|
|
|
; Check the high end of the negative aligned DSGF range.
|
|
define i64 @f11(i64 %dummy, i64 %a, i32 *%src) {
|
|
; CHECK-LABEL: f11:
|
|
; CHECK: dsgf %r2, -4(%r4)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32, i32 *%src, i64 -1
|
|
%b = load i32, i32 *%ptr
|
|
%bext = sext i32 %b to i64
|
|
%rem = srem i64 %a, %bext
|
|
ret i64 %rem
|
|
}
|
|
|
|
; Check the low end of the DSGF range.
|
|
define i64 @f12(i64 %dummy, i64 %a, i32 *%src) {
|
|
; CHECK-LABEL: f12:
|
|
; CHECK: dsgf %r2, -524288(%r4)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32, i32 *%src, i64 -131072
|
|
%b = load i32, i32 *%ptr
|
|
%bext = sext i32 %b to i64
|
|
%rem = srem i64 %a, %bext
|
|
ret i64 %rem
|
|
}
|
|
|
|
; Check the next word down, which needs separate address logic.
|
|
; Other sequences besides this one would be OK.
|
|
define i64 @f13(i64 %dummy, i64 %a, i32 *%src) {
|
|
; CHECK-LABEL: f13:
|
|
; CHECK: agfi %r4, -524292
|
|
; CHECK: dsgf %r2, 0(%r4)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32, i32 *%src, i64 -131073
|
|
%b = load i32, i32 *%ptr
|
|
%bext = sext i32 %b to i64
|
|
%rem = srem i64 %a, %bext
|
|
ret i64 %rem
|
|
}
|
|
|
|
; Check that DSGF allows an index.
|
|
define i64 @f14(i64 %dummy, i64 %a, i64 %src, i64 %index) {
|
|
; CHECK-LABEL: f14:
|
|
; CHECK: dsgf %r2, 524287(%r5,%r4)
|
|
; CHECK: br %r14
|
|
%add1 = add i64 %src, %index
|
|
%add2 = add i64 %add1, 524287
|
|
%ptr = inttoptr i64 %add2 to i32 *
|
|
%b = load i32, i32 *%ptr
|
|
%bext = sext i32 %b to i64
|
|
%rem = srem i64 %a, %bext
|
|
ret i64 %rem
|
|
}
|
|
|
|
; Make sure that we still use DSGFR rather than DSGR in cases where
|
|
; a load and division cannot be combined.
|
|
define void @f15(i64 *%dest, i32 *%src) {
|
|
; CHECK-LABEL: f15:
|
|
; CHECK: l [[B:%r[0-9]+]], 0(%r3)
|
|
; CHECK: brasl %r14, foo@PLT
|
|
; CHECK: lgr %r1, %r2
|
|
; CHECK: dsgfr %r0, [[B]]
|
|
; CHECK: br %r14
|
|
%b = load i32, i32 *%src
|
|
%a = call i64 @foo()
|
|
%ext = sext i32 %b to i64
|
|
%div = sdiv i64 %a, %ext
|
|
store i64 %div, i64 *%dest
|
|
ret void
|
|
}
|